OTC's Replacement Standard Thread Die Set for the Universal Outside Thread Chaser includes 6 dies with multiple thread sizes per die. Includes the following: 4, 5, 6, 7, 7-1/2, 8, 9, 10, 11, 11-1/2, 12, 14, 16, 18, 20, and 24 threads per inch. Sizes are clearly stamped on the head faces for easy identification. Strong cutting surface ensures cleanly trued threads and a long service life. Value is at the core of the OTC tool and equipment portfolio. Whether it's a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.